Wearable Device Security Model for Independent Digital Purchases
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Solution Overview
Problem
Wearable electronic devices typically require a companion device for digital purchases, limiting their autonomy and user convenience.
Innovation Solution
A wearable device equipped with a wireless network interface, touch-sensitive display, and processors that enable it to establish a communication connection with a cloud service provider for digital purchases without assistance from a companion device, using a passcode to unlock securely stored keys and generate a signature for transaction authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wearable device is designed to perform digital purchases independently, then user convenience and autonomy are improved, but device complexity increases due to requiring secure key storage, passcode authentication, and direct cloud communication capabilities
Solution Approach 1:
The patent segments the security functionality by separating the secure key storage and authentication processes into distinct modular components within the wearable device. The passcode interface, key storage, and digital purchase transaction capabilities are implemented as separate but integrated modules, allowing the device to function independently while maintaining security through divided functional responsibilities.
2Reliability
If secure key storage is implemented on the wearable device for digital purchases, then transaction security is improved, but the risk of key exposure or unauthorized access increases
Solution Approach 1:
The patent introduces a passcode as an intermediary authentication mechanism that mediates between the user and the securely stored cryptographic keys. The passcode interface acts as a mediator that must be successfully authenticated before any key operations can occur, creating an additional layer of protection that prevents direct access to the keys while maintaining secure transaction capabilities.
3Productivity
If the wearable device stores cryptographic keys locally for purchase transactions, then transaction speed and independence are improved, but the security burden and potential attack surface increase
Solution Approach 1:
The patent implements self-service functionality where the wearable device autonomously performs digital purchase transactions using its own stored cryptographic keys and passcode authentication system. The device serves itself by maintaining local key storage, handling its own authentication through the passcode interface, and completing transactions independently without requiring external security infrastructure or companion devices, thereby improving transaction speed while managing security burden through self-contained architecture.
Data Source
AI summary
Embodiments described herein provide a security model and interface for wearable device digital purchases that can be made without the assistance of a companion device. The satellite device can be configured to be used as a primary device, without reliance upon a paired device. A provisioning process may be implemented to generate and validate one or more tokens to authenticate the wearable device and a set of cryptographic keys can be generated. Subsequently, the token(s) and cryptographic keys may be used to enable a user of the wearable device to make purchases from a digital shopping store without support from an associated companion electronic device.